Hi, I came to this site today to find out if anyone owns an IsuZu 6.5 liter like mine thats in a '93 FSR. I'm trying to find out how to get more horsepower as I have read that this engine is set with as few as 180 H.P. and can be set to as high as 275HP. Do you know anyone that could tell me how to set the H.P. to a higher setting or do you know how. Is it a set screw on the injection pump? I have a 26' flat w/beavertail that I use to haul campers and cars and can't get over 62mph. Thanks and will look for your posts in the forum.